Automobile-jack



S. HEYMANN.

AUTOMOBILE JACK.

APPLICATION FILED JULY 27,19I8- Patented J 11116 22, 1920.

3 SHEETSSHEET I.

JLL L -4 m gnvenfoz Jill/My Mymamz S. HEYMANN AUTOMOBILE JACK.

APPLICATION FILED JULY 27.1918.

Patented June 22, 1920.

3 SHEETS-SHEET 2.

- 5 v wemfoz Jfidmy flay/realm 351; 4 44 4 S. HEYMANN. AUTOMOBILE JACK.

APPUCATION FILED JULY 27,1918. 1,344,037. Patented June 22, 1920.

3 SHEETS-SHEET 3.

'avwewrop z'liizeyflqymarzzz ,UNITED STATES PATENT OFFICE.

SIDNEY HEYMANN, 0F FAR ROCKAWAY, NEW YORK, ASSIGNOB 0F ONE-HALF '10PHILIP S. HEYMANN', 0F PITTSBURGH,

PENNSYLVANIA.

AUTOMOBILE-JACK.

Specification of Letters Patent' Patented J 11119 22, 1920.

Application filed July 27, 1918. Serial No. 246,953.

.over the construction shown in my co-pending application Serial No.237,784, filed on June 1st, 1918.

One of the objects of the invention is to provide a new and improvedjack which may be incorporated as a fixed part of the vehicle, so thatthe same is always ready for use, together with the provision of new andimproved means for operating the several jacks either singly orsimultaneously.

Another object of the invention is to provide new and improved means forcontrollin the operation of the several jacks.

nother object of the invention is to provide controlling means for jacksof the above character, -wh1ch is exceedingly light 1n weight and whichwill not rattle during the operation of the motor vehicle.

Other objects and aims of the invention,

more or less specific than those referred to;

above, will be in part obvious and in part pointed out in the course ofthe following description of the elements, combinations, arrangementsof'parts and applications of principles, constituting the invention; andthe scope of protection contemplated will be indicated in the appendedclaims.

Inthe accompanying drawings wherein I have shown a preferred embodimentof my invention Figure 1 is a top plan view of a portion of a motor carequipped with my invention.

Fig. 2 is a view in elevation \of a portion of the controlling means. 4

Fig. 3 is a sectional View showing the construction of the valvemechanism of the controlling means, said section being taken on line 3 3of Fig. 2. I

Fig. 4 is a vertical sectionalview taken through one of the jacks,showing the interior construction thereof.

.of h l F ig; 7 is a bottom plan view of one, of

F ig. 5 is an elevational view of one of the acks.

Fig. 6 is .a horizontal sectional view through one of the jacks,taken-on line ,66

the acks.

Fig. 8 is an elevational view showing a modified form for releasing thejacks; and

Fig. 9 1s a similar view of still another means for releasing the jacks.

R eferr1ng now to the drawings, wherein slmilar reference charactersreferto similar parts throughout the several views thereof,

the reference numeral 1 denotes the frame or chassis of the motorvehicle, and 2 and 3 denote res ectively the front and rear axlesthereof. lamped to the front axle near the ends thereof, are jacks 4.and 5 and to the rear axle 3 near the end thereof are clamped jacks 6and 7. eferring illustrate the construction of the jack, it will benoted that eachiack comprises a bracket member 8, which is adapted to beclamped to the axle by means of the head piece 9 of the clamp screws 10,so that the same is r gidly and permanently secured thereon. The bracket8 carries a casing 100, which as shown 1s an integral part ofthebracket, and located within the casing is a plunger or piston 11, thelower end of which projects without thecasing, and is provided with afoot 12, whlch is adapted to engage with the ground, or support duringthe operation of the jack.

gThe plunger '11 is normally held in a re-- tracted position within thecasing 100, as

by means of the extensile springs 13, which rest upon shoulders 14,formed on the easmg 100, and act against heads 15 of rods 16, whichextend through the shoulders 14 and are anchored in the foot 12. Thefoot 12 is, therefore, normally held in an upward position by theconstruction just described.

to Figs. 4., 5, 6 and 7, which Located within the plunger orpiston 11 inthe present instance is an endwise eX-.

pansible casing 17, the same being constructed in the-nature of abellows, and comprising a plurality of'pivotallyor'fiexibly connectedsections 18. --The wall- 0f this casing may be formed of rubber,leather, or

through the conduit 21, which is connected.

with the upper end of said casing the latter will expand and cause theplunger 11 to be projected downwardly through the casing, whereby thefoot 12 will be caused to engage with the ground, so thata furtherexpanding of the casing 17 will cause the jack to lift the portion ofthe car to which it is attached.

The casing 17 fits nicely within the plunger 11, which prevents alateral expansion thereof and compels the lower end 20 .to operate thefoot 12, as above described,

through'the reaction of the parts against the wall 19 of the casing orshell 100.

Referring to Figs. 4 and 6, it will be noted that the shell or casing100 is provided with lateral extensions 22 and 23 respecln'vely, whichare apertured, as at 24, and 25, through which extend pawls 26 and 27,which are adapted to engage ratchet teeth 28 and 29 formed upon theplunger 11; said pawls being held in engagement with said teeth as bymeans of the leaf springs 30 and 31. The pawls 26 and 27 are pivoted at32 and 33 upon brackets formed exteriorly of the wall of the casing 100.

Thus it will be seen, by means of the construction ust described, whenthe plunger 11 is forced downwardly the pawls 26 and 27 I will ride overthe inclined surfaces of the teeth 28 and 29, and will operate toprevent a retractilemovement of said plunger in whatever position it maybe moved by the air pressure exerted interiorly thereof.

The reference numeral 34 indicates a lever pivoted at 35 to a bracket 36formed upon the casing 100, said lever having arms '37 and 38 whichstraddle said casing, and are so disposed as to lie in proximity totheupper ends or tail pieces 39 and 40, which are curved or cammedoutwardly, as shown. The lever 34 is provided with an operating handle41, by means of which it may be manipulated.

It willbe seen that when the handle 41 of the lever is moved or swungdownwardly the arms 37 and 38 thereof will engage the curved upper endsof the pawls 39 and40 causing the pawls to lie-disengaged from theratchet teeth of the plunger, whereby the latter will'be free to move toits normal position within the casing or shell 100.

The above description of one of the jacks applies to allof them,inasmuch as they are identically constructed.

All of the jacks have conduits 21, which connect the expansible casingstherein with an air reservoir 42, which is preferably located within thebody of the vehicle in a position conveniently to be reached by thehands of the driver, as shown in Fig. 1 of the drawings, located uponthe righthand side of the forward portion of the'body near the frontseat.

The conduits 21 lead into the air reservoir 42 and each conduit isindependently valved as at 43, 44, 45 and 46, and each is provided witha; second: valve mechanism comprising a tube 47 apcrtured as at 48, andprovided with a plunger valve 49, which is normally held in the positionshown=in Fig. 2 of thedrawings, as-by means-of the spring 50. In thisposition the bypass 51 of the valve is held out of registry with thepassageway or aperture 48 of the tube 47. When, however, the valvemember 49 is depressed, which operation may be effected by pushingdownwardly upon the head 52, the by-pass 51 and the aperture 48 will becarried into registry, whereby the air under pressure may pass throuhthe-tube 47, thence into theconduit 21. %he construction of the valves43 #3046 respectively is illustrated in Fig. 3 of the drawings, and itwill: be noted that this valve is what isknow n as a two-way valve, sothat when the valve isi'n one position a free passageway is at allnimesmaintained for the passage of compressed air into the conduits 21through an aperture 53 of: the valve stem 54. When, however, the valvestem 54 is turned to an angle of 90 a b vpass 55, shown in dotted linesin Fig. 3 is carried-into such position that the compressed air in theflexible casings17i of the jack will pass through the conduit 21 andescape to the atmosphere, wherebyreleasement of the air pressure willpermit the foot .of the jack to be returned: to normal position,

by the means above described.

Leading mtio=the reservoir, or-air chest 42, 1s a condu1t'56, which. isconnected wlth an air pump, the latter'preferably being operated bymeans of an electric motor 58,

which may be operated as by. means of the battery 59 to the circuit 60and controlled: as by means of thepushtbuttons .61 and 62..

In .the embodiment of the invention shown in Fig. 8 the operating handle41 of the lever 34 is shown as being controlled by.

means of a cable 63, which passes over a drum 64, which maybelocated? inposition convenient to the driver ofip the car, and which may beoperated as means of the handle 65, whereby the jacks mazybereleasedzsimultaneously and allowedtow return to theirnormal positions.

Inthe embodiment of my invention shown in Fig. 9 of the drawingstheoperating handles 41 are shownasbing operated by airpressure as by meansof the cylinder'and piston 66 and 67. respectively, and a common gerlocated in said casing,

supply conduit 68, suitable branch conduits (39, 70, 71 and 72 beingconnected with the controlling means of the various jacks. The supplyconduit 68 receives its air supply the valve pipe 73.

Having thus dcscribedthis embodiment of my invention, the manner inwhich the same operates, which should be obvious, may now be understood:

When it is desired to operate one or more of the jacks, it is merelynecessary to start the motor in the manner above described, in which theair will be produced in the air chest or reservoir 42. Any one or aplurality of the jacks may then be operated by pushing upon the heads 52of the valve stems 49, whereupon air pressure will be released intoparticular conduits 21 of the jacks which it is designed to operate,whereupon the air pressure within the flexible casing 17 will operatethe jacks in a manner which has already been described.

The pawl and ratchet mechanism of each jack will operate to hold it inany position to which it is projected by means of the fluid underpressure, and as has already been described, the jacks may be releasedeither by the direct operation of the handle 41, or by means of the drum64 to which the lever handles may be connected by the cable 63; or inthe embodiment shown in Fig. 9, by means of compressed air, as hasalready been described.

Thus it'will be seen that I have provided a construction well adapted toattain, among others, all the aims and objects above pointed out in anexceedingly simple yet efficient manner.

As many changes could be made in this construction without departingfrom the scope of the following claims, it is intended that allmatter-contained in the above description or shown in the accompanyingdrawing shall be interpreted as illustrative only and not in a limitingsense.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In apparatus of the class described, in combination, a casing,-meansfor securing said casing to the axle of the vehicle, a plunsald plunger,and an expansible casing lo- 'catedwithin said plunger bearing at oneend against said casing and at its other end against said foot andadapted to operate the plunger.

2. In apparatus of the class described, in

combination, a casing, means for securing said casing to the axle of thevehicle, a plunger located in said casing, a foot carried by saidplunger, andan expansible casing located within said plunger hearing atone end against said casing and at its other end a foot carried "byagainst said foot, and adapted to operate the plunger and means forholding said plunger in any .position to which it is moved with respectto said casing. from the air chest or reservoir 42 through to hold theplunger in any position to which it is moved with respect to saidcasing.

i. In apparatus of the class described, in combination, a casing, meansfor mounting the latterupon the axle of a vehicle, a plunger locatedwithin said casing, a foot carried by said plunger, an expansible casinglocated within said plunger adapted for projecting said plunger fromwithin said casing, and pawl and ratchet mechanism interposed betweensaid casing and said plunger for holding the latter in any desiredposition with respect to said casing.

5. In apparatus of the class described, in combination, a casing, meansfor securing the latter to the axle of a vehicle, a plunger locatedwithin said casing, a foot carried by said plunger, an endwise.expansible casing located within said plunger and operating betweensaid plunger and said casing, whereby the plunger may be moved outwardlywith respect to said casing, and pawl and ratchet mechanism interposedbetween the casing and the plunger adapted automatically to hold thelatter in any position to which it ismoved by said endwise expansiblecasing.

' 6. In apparatus of the class described, a plurality of jacks, meansfor supporting each of said jacks upon the axles of a vehicle, pneumaticmeans commonto all of said jacks for operating them, means common to allof said jacks for automatically holding them in any desired position,and means common to all of said jacks for simulta-,

neously releasing said holding means.

7. In apparatus of the class described, in combination, a plurality ofpneumatically operated jacks each of which is adapted to be mounted uponan axle of a vehicle, source of compressed fluid supply common to all ofsaid jacks, whereby they may be operated, means common to all of saidjacks for automatically holding them in any desired position, and meanscommon to'all of said jacks for simultaneously actuating said holdingmeans whereby all of said jacks may be simultaneously released whenoperated.

8. In apparatus of the'clas's described, in combination. a plurality ofpneumatically operated jacks, each of which is adapted to be mountedupon an axle of a vehicle, me-

pressureinto said reservoir, means fon conchanical: means for lockingeach of said jacks in any position to which it is operated,a commonsource ofpressure supply to all of said j acks and a means common to allof said jackmwhereby they may be released when operated.

9. n1 apparatus of the class desoribemin combination, a plurality ofpneumatically operated jacks, means for mounting each of said: jacksupon the-axle of a vehicle, a reservoir fen containing compressed air, aconnection between said reservoir and each of said jacks, means forsupplying air under naeaow nesting, each of said jacks with. saidreservoin, mechanicalmeans ada ted automatically tolock each of said jain any position. to which it. is operated. by said pneumatic means, andmeans common to all of said jacks adapted simultaneously toirelease themwhen in any operative position.

Imitestimony whereof I affix ray-signature in the presence oftwowitnesses.

EMMA WEINBERG, MARoz LEVY.

